ThescienceofthestarsVIP专享VIP免费

Unit4solarsystem太阳系SunVenusMercuryMarsJupiterSaturnEarthPlutoNeptuneUranusButscientistsnowthinkPlutoistoosmalltobecalledaplanet.Doyouknowhowourlifebeganontheearth?Doyouknowanyancientideaaboutthebeginningoftheuniverse?BigBangHOWLIFEBEGANONTHEEARTH?1.Whatistheoriginalearth’satmospheremadeupof?2.Whatisthefundamentaltothedevelopmentoflife?3.Whichkindoflife-beingfirstappearedontheearth,plantsoranimals?4.MainideaofeachparagraphScanningScanthepassagequicklytoanswerthefollowingquestions.carbon,nitrogen,watervapour,andothergases2.whatisfundamentaltothedevelopmentoflife?Water1.Whatistheoriginalearth’satmospheremadeupof?3.Whichkindoflife-beingfirstappearedontheearth,plantsoranimals?Why?Atfirst,smallplantsbegantoappearonthesurfaceofthewater,theyproduceoxygen,whichencouragedthelaterdevelopmentofearlyshellfishandallsortsoffish.4.Choosethemainideaforeachparagraph()Thearrivalofhumansandtheirimpactontheearth.()Theformationoftheearth.()Thedevelopmentofplantsandanimalsontheearth.()Awidelyacceptedtheoryabouttheformationoftheuniverse.()Theimportanceofwaterforlife.54213PassagestructureMainbodyPara1:Para2:Para3:Para4:Para5:Awidelyacceptedtheoryabouttheformationoftheuniverse.Theformationoftheearth.Theimportanceofwaterforlife.Thedevelopmentofplantsandanimalsontheearth.Thearrivalofhumansandtheirimpactontheearth.Readthepassagecarefullyandanalyseitsstructure:earth,atmosphereandwaterlifedevelopmentHumanbeings•（）AInsectsandamphibiansappeared.•（）BDinosaursappeared.•（）CTheearthbecameasolidball.•（）DSmallplantsgrewonthewater.•（）EReptilesappeared.•（）FPlantsbegantogrowondryland.•（）GTheearthwasacloudofdust.•（）HWaterappearedontheearth.•（IShellfishandotherfishappeared.•（）JTheuniversebeganwitha“BigBang”.•（）KCleveranimalswithhandsandfeetappeared.•（）LMammalsapeared.5106）2948371DetailedreadingPuttheorderofdevelopmentoflifeintoatimeline.1211PostreadingAfterreadingthepassage,discussthefollowingquestions.1.Whywastheearthdifferentfromtheotherplanets?2.Whyisitwrongtoshowfilmswithdinosaursandpeopletogether?Becausethewaterremainedontheearth.Becausedinosaursdiedoutlongbeforehumanbeingsdevelopedontheearth.PostreadingAfterreadingthepassage,discussthefollowingquestions.3.Whatproblemiscausedbyhumanbeings?Humanbeingscausesglobalwarming.Letsreviewtheevolutionoflifeontheearth.Afterthe“BigBang”,theearthwasfullofwater.Originalcellsappearedintheocean.Thecellsinthewaterbegantoseparate.Marineanimalscameintobeing.Someanimals(amphibian&insects)cametoland.Someanimals(amphibian&insects)cametoland.Reptileappeared.dinosaursdinosaursMammalsManhadevolvedfromapes.Theydevelopednewmethodsofgrowingfood,huntingandmovingaround.Astimewentbytheycoveredtheearthandhavebecomethemostimportantanimalsontheplanet.Wearemakingtheworldbetter.Wearemakingtheworldworse.ABDiscussiondevelopednewmethodsofgrowingfood(1)Whathumansdeveloped?developednewmethodsofhuntingdevelopednewmethodsofmovingaroundGreenhouseeffect(2)Buttheyarenottakingcareoftheearthverywell.Whatproblemarehumanscausing?puttingcarbondioxideintotheatmospheretheearthmaybecometoohotAsastudent,whatlittlethingscanwedofortheearth?solarenergyplanttreesrecyclerubbishpreventdesertificationsavewaterpurifyairWhetherlifewillcontinueontheearthdependsonhumanbeings.Onlyifwecarewillwehelp,onlyifwehelpshallallbesaved!Assignment:1.Collectmoreinformationaboutthedevelopmentoflifeandmakeaposterwithyourgroupmembers.2.Readandretellthepassage.